Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b7e367fa9712f6…

MALICIOUS

PDF

39.8 KB Created: 2020-10-06 12:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5aed700145fa4b1db27ddc04ee4c723d SHA-1: 71392d7255052f513ea6f6a7d9edd45221d94689 SHA-256: 32b7e367fa9712f61876dc09f5e8defd23e9913134f0198cbb3f9b5b07a3d629
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=creatividad+osho+pdf In PDF document text
    • http://jaxironob.visionarylead.org/uploads/1/3/1/1/131163599/bonusagebekafoxi.pdfIn PDF document text
    • http://files.perryyoungblood.com/uploads/1/3/1/3/131383329/2393668.pdfIn PDF document text
    • http://files.zamdevelopsj.org/uploads/1/3/0/7/130776850/zedijamolunasu.pdfIn PDF document text
    • http://files.mkclairvoyants.com/uploads/1/3/1/0/131070508/d73a2546.pdfIn PDF document text
    • http://files.annekevanderlende.com/uploads/1/3/0/7/130775690/fizex.pdfIn PDF document text
    • https://site-1038407.mozfiles.com/files/1038407/81289640842.pdfIn PDF document text
    • http://lovexopu.trumpsgreatamericafacts.com/uploads/1/3/1/4/131452824/bijibozolavixeb_xelugowedarexu_tabikope_zutur.pdfIn PDF document text
    • http://mejab.littleannadesigns.com/uploads/1/3/1/6/131637047/163890.pdfIn PDF document text
    • http://wubogev.osheastuff.com/uploads/1/3/0/7/130738970/d76042dc2323d.pdfIn PDF document text
    • http://xafile.doublehappinessllc.com/uploads/1/3/1/4/131437318/voreg_pelemoradesimuf_xiwuten_venagudij.pdfIn PDF document text
    • http://jewajuto.kekuna.org/uploads/1/3/2/6/132681670/fobogu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6046 5060 bytes
SHA-256: 5b37f8aa687017d0e481711ac13d05c62971cc539f457510c32cea1c7580b08c
font_01_sfnt_off00007179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7179 9944 bytes
SHA-256: 225bf9c6094862042ea4ea70aea7bae3c86f7a88d8468ce75a2312ca60c58d16